Keep her above 4000rpm and she'll thank you for it every day.

[Lil bastard]

WOW! Very passionate arguements!

But, really, it's only academic or philosophical because too many assumptions are being made for the stated arguement to have any real world relevance.

Nothing is noted about the type of lubrication - not all motor oils provide the same level of lubrication and protection under high RPM use.

Nothing is noted about the filtration system (filter) used or whether different filters change the equation - they do - see: Barris, M.A. (1995). "Total Filtration: The Influence of Filter Selection on Engine Wear, Emissions and Performance". SAE Fuels and Lubricants (Paper 952557)

Nothing is noted about the lubrication system flow capability and variances under differing RPM ranges.

Nothing is noted about the ambient operating temperatures or temperature ranges for this high rpm operation.

Nothing is noted about the cooling system efficiencies at high RPMs or whether the levels of coolant pump cavitation at varying RPMs have an effect on wear - they do.

Nothing is noted about the varying valvetrains and their contributions to increased wear at high RPMs.

Fuel Quality, Gen'l Engine condition, Driving Habits, Load, and on and on...

As I read this, there are simply too many unmentioned or unquantified variables to produce a soletary conclusion to this arguement.

Each side will continue to produce out-of-context or non-relevant technical data or references to try and eek some further validation of their expressed view and ample, endless, tidbits exist out there to prolong the arguement indefinitely with no chance of reaching a reasonable conclusion.

Nor does it seem, are the parties involved capable of being swayed by the arguements made by the other side. People it seems will go away believing pretty much what they did as they entered this discussion.

I mean, there is not even a concensus on this issue among qualified experts, how could we possibly hope to produce one here?

So, really, IMHO, it's time to slap the lock on this thread - I mean 87 replies over 5 pages and no end in sight!

Time to get back to Boxstering - at whatever RPM Floats your Boat.